Automatically-locking thread-guide.



N0. 642.095. Patented Jan. 30. I900. D. A. DUGAN.

AUTOMATiCALLY LOCKING THREAD GUIDE.

\Applicabion filed May 9, 1899.:

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STATES PATENT FFIQEQ DANIEL A. DUGAN, on NEW YORK, N. Y.

AUl'UWlATlCALLY-LOCKING THREAD-GUIDE.

SPECIFICATION forming part of Letters Patent No. 642,095, dated January 30, 1906. Application filed May 9, 1899. Serial No. 716,143. (No model.)

To all whom it may concern:

Be it known that I, DANIEL A. DUGAN, a citizen of the United States, and a resident of New York, (Brooklyn,) in the county of Kings and State of New York, have invented certain new and useful Improvements in Automatically-Locking Thread-Guides, of which the following is a specification.

The object of my present invention is to provide an automaticallylocking threadguide; and it consists of a suitable casting which is adapted to be attached to the frame of a reel or other piece of mechanism, and this casting has therein a horizontal roller and coacting therewith a curved eccentric piece, between which parts the thread or strand travels, the eccentric part being held lightly in contact with roller by means of a spring, so that any inequalities in the thread will cause the eccentric piece to bind against the roller and stop the travel of the thread, all of which will now be set forth in detail.

In the accompanying drawings, Figure 1 is a reel and frame equipped with my improved automatically-locking thread-guide. Fig. 2 is a view of the rear side of the guide; Fig. 3, a side view; Fig. 4, a vertical section along the line of the travel of the thread, and Fig. 5 a view of the front side of the guide.

In constructing my invention I prefer to have the entire body of the guide A cast in one piece. This is composed of a base B, having at the rear side a downturned wing 0, provided with a hole D, by means of which it is attached to the frame of the reel or other mechanism. From this base two standards E F project upwardly, and between these standards Iplace a roller G, so mounted therein that itwill freely turn. The standard F has therein a vertical gain, (not shown,) in which I place a verticallysliding bar H, which is held in position by means of a set-screw I. Near the upper end of this bar H, I secure a horizontal rod J, on which is placed a roller K, and to this roller is cast an eccentric L, provided with a roughened surface, which sur face coacts with the lower roll, the space between said roll and the eccentric face being regulated by the vertical bar H, so that the particular thread fed through between the roll and eccentric will readily pass through without causing the eccentric to bind, unless the thread should have an abnormal ment or a knotted portion.

The free end of the rod J has a spring M, which is coiled around the rod and has its end locked behind a pin N, so as to hold the eccentric clear of the roll G normally.

At the rear side of the casting the stand ards E F are contracted or brought together, so as to leave a narrow space between to guide the thread, and each standard has a wing O, suitably rounded, so that the thread will not be chafed or come in contact with any sharp edges or corners, and thus fray the same in its passage through the guide.

This guide is adapted to be used on all reeling, spooling, slashing, or skein-winding enlarge machines and has several very important advantages not possessed by the present tl1readguides. The thread-guides now used have usually two vertical posts provided with knife-edges which are placed together so that there is simply sufficient space for the thread to pass between. In case a knot or enlargement appears at any point in the thread the sharp edges of the blades cut off or tear the thread, thus injuring it, and the knife-blades also accumulate lint, which is very objectionable, and I desire to avoid this by causing the guide to stop the travel of the thread instantly, and this is done by the knot or e11- largement forcing down the eccentric L, so that it will bind against the roll G. As the lower roll turns freely when the thread is normal, there is no surface on the guide which will fray the thread and no action of the eccentric is possible until an imperfection appears. I propose to make the roll and cocentric of any suitable material best adapted for the purpose.

What I claim as new is- 1. In an automatically locking threadguide, the combination with a casting consisting of a base-plate having a downwardlyprojecting portion for fastening to a frame and a standard on each side of the base converging rearwardly to form a thread-guide, a horizontal roller pivoted near the base and between the said standards, and a verticallyadjustable eccentric above the said roller provided with a spring to hold the said eccentric away from the roller in its normal position, substantially as set forth.

fitted thereon, an eccentric secured to the said sleeve and adapted to swing downwardly adjacent to the said roller, substantially as set forth.

Signed at New York, (Brooklyn,) in the county of Kings and State of New York, this 6th day of February, A. D. 1899.

DANIEL A. DUGAN. Witnesses:

SAML. W. ADAMS, M. QUIGLEY. 

